I know you wanted people who are in it but I enquired a few month back and was given a 30 minute phone introduction where I literally didn't speak. He then told me the yearly price which was a bit much for me.
Anyway, I emailed a few companies on there asking or feedback, I would say it was 50/50. The thing that most confused me was the gulf in prices people where paying, no one seems to pay the same price for membership. I had one guy email me back saying he's simply kept on the keep up the numbers, I had others paying £600 and I was quoted nearly a £1000.
I skipped it, I'm sure someone will be along who is on there soon to tell you how great it is though.